(19)
(11) EP 0 250 422 A1

(12)

(43) Date of publication:
07.01.1988 Bulletin 1988/01

(21) Application number: 86901881.0

(22) Date of filing: 24.03.1986
(51) International Patent Classification (IPC): 
D21C( . )
D21C 3/ 00( . )
D21C 3/ 04( . )
D21C 9/ 16( . )
(86) International application number:
PCT/FI1986/000028
(87) International publication number:
WO 1986/005529 (25.09.1986 Gazette 1986/21)
(84) Designated Contracting States:
AT DE FR SE

(30) Priority: 22.03.1985 FI 19850001156
11.02.1986 FI 19860000609

(71) Applicant: OY KESKUSLABORATORIO - CENTRALLABORATORIUM AB
SF-02150 Espoo (FI)

(72) Inventors:
  • LAAMANEN, Lauri, Aukusti
    SF-00350 Helsinki (FI)
  • SUNDQUIST, Jorma, Juhani
    SF-02320 Espoo (FI)
  • WARTIOVAARA, Ilkka, Yrjö, Paavo
    SF-02210 Espoo (FI)
  • KAULIOMÄKI, Seppo, Veli-Matti
    SF-00420 Helsinki (FI)
  • POPPIUS, Kristiina, Johanna
    SF-00200 Helsinki (FI)

(74) Representative: Brommer, Hans Joachim, Dr.-Ing., et al 
Patentanwälte Dipl.-Ing. R. Lemcke Dr.-Ing. H.J. Brommer, Postfach 40 26
D-76025 Karlsruhe
D-76025 Karlsruhe (DE)

   


(54) PROCESS FOR PREPARING BLEACHED PULP OUT OF LIGNOCELLULOSIC RAW MATERIAL